The web was built for people. A tsunami of AI agents is changing that fast.

zhengshun tang/Getty Images AI agents are flooding the web, changing who, or what, uses the internet. Businesses are racing to adapt as bots browse, shop, negotiate, and buy online. The next battle online may be over which AI agents websites choose to let in. I visited the CEO of a major startup in SF last week. He recounted a tale that blew my mind. His company recently put a new product online but hadn't done a big launch or any marketing. Within a week or two, it got at least a million signups. Barely any humans even knew about it. This was all AI agents just finding this new tool and using it en masse. This is the future of the internet, and it's arriving at warp speed. Back in early 2025, I described a vision of a "dark internet" where humans will be drowned out by agents accessing and using online information, widgets, and tools all by themselves. Silicon Valley got busy building the "rails" for this agentic web so that these autonomous software programs could act on our behalf, executing workflows, doing online chores, and even paying for things, all without us lifting a finger. This took a couple of years, but the early foundations have been built and that's been enough to support a sudden surge in agent activity online, producing both stunning and worrying results. Meta recently launched a personal agent called Muse, which got busy scouring the web and calling customer service on behalf of millions of users. It hit the top of the app charts late Thursday. Instinct, an agent that lives in your text messages, is performing similar feats. In the workplace, coding agents are churning out millions of lines of code faster than any human software engineer. And some of these bots have broken out of online testing environments, sparking new predictions of AI doom and calls for an industry slowdown. 'Rounding error' That's unlikely to stop the agentic internet from exploding and changing how our lives and businesses are run in unprecedented ways. Bot traffic overtook human traffic online a few months ago, and it could become 1,000 times bigger than human-generated traffic in about five years, according to Cloudflare estimates. "Humans will be a rounding error on the internet, not because human traffic goes down, but that's just how fast we're seeing non-human traffic grow," Cloudflare CFO Thomas Seifert said earlier this year. "AI agentic Internet traffic will obviously VASTLY exceed human usage. Not a close call at all," Elon Musk wrote on X following the Cloudflare projection. An internet for machines An internet designed for machines is likely to be very different from the one that was built over the past few decades for humans. Take a look at this video posted this week on X by Gregor Žunič, cofounder of Browser Use, a startup that's developing an AI agent framework for controlling web browsers and automating online tasks. It shows an agent using Google to find the best flight from Zurich to London on a specific date. It took the bot seven seconds, way faster than a human could do it. Breaking: Browser Use + Jev = Ultrafast ⚡ Findings flights took 7s and cost only $0.0039 🤯 > new action space every step > DOM state space > small LLM fallback to type (this video is at 1x speed btw) Built a tiny open source browser agent. try it below ↓ pic.twitter.com/AplCBRYC5o — Gregor Zunic (@gregpr07) September 17, 2026 Imagine this happening millions of times a second on sites built for human, not machine, speed? Muse saves As with all powerful new technology, the agentic internet will produce good and bad outcomes. And we're already seeing both. Since Meta's Muse launched last week, early users have been recounting stories of the agent going out on the web to find and negotiate new subscriptions, insurance policies, and other cost savings. Joseph Devoy, founder of startup Tempo, posted on X that he saved thousands of dollars by uploading his auto insurance policy to Muse and asking the agent to find a better rate with identical coverage. It took five minutes to find a cheaper option, according to Devoy. Yesterday I uploaded my auto insurance policy to Meta @Muse and asked for a better rate with identical coverage. In ~5 minutes, it found a policy saving me $3,500 /year, bought it, and canceled my old one. I knew I was overpaying. I’d abandoned several attempts to switch because… pic.twitter.com/HlIweoWN2K — Joe Devoy (@JosephDevoy) September 10, 2026 Too much tech hype? Then trust my colleague Pranav Dixit who put Instinct through its paces recently. In just a few days, it booked travel, ordered groceries, dealt with customer service, canceled subscriptions, answered emails, and even faxed paperwork to his bank. He was impressed. Other users say Muse negotiated a lower internet bill, found forgotten subscriptions, and even spotted an Adobe payment that had somehow been tied to someone else's account. The stories come with caveats. Some users have posted examples of Muse inventing information during phone